Hemoglobin S Can Be Separated from Normal Hemoglobin a by Electrophoresis

Multiple Choice

Hemoglobin S can be separated from normal hemoglobin A by electrophoresis on paper or cellulose acetate foil.This is possible because hemoglobin S:

A) Is more hydrophilic than hemoglobin A.
B) Is more hydrophobic than hemoglobin A.
C) Has a different number of electrical charges than hemoglobin A.
D) Has a more compact shape than hemoglobin A.
E) Has a different molecular weight than hemoglobin A.